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P.37
Appendix C
VALVE NO. 14
–
TANK AND PUMP ISOLTATION VALVE
VALVE 14 IS NORMALLY OPEN. WHEN CLOSED IN CONJUNCTION WITH
VALVE 5 THE SOLAR COLLECTOR LOOP PIPING IS ISOLATED FROM THE
SOLAR STORAGE TANK. WHEN CLOSED IN CONJUNCTION WITH VALVE 12
THE CIRCULATOR PUMP IS ISOLATED FROM THE SOLAR STORAGE TANK.
NEVER
SHUT THESE VALVES WHILE THE CIRCULATING PUMP IS IN
OPERATION.
VALVE NO. 12
–
PUMP ISOLATION VALVE
VALVE 12 IS NORMALLY OPEN. WHEN CLOSED IN CONJUNTION WITH
VALVE 14 THE CIRCULATING PUMP IS ISOLATED FROM THE SOLAR
COLLECTOR LOOP PIPING.
NEVER
SHUT THESE VALVES WHILE THE
CIRCULATING PUMP IS IN OPERATION.
VALVE NOS. 9
–
SYSTEM FILL VALVE
VALVE 9 IS NORMALLY CLOSED. WHEN OPEN IT IS USED TO CHARGE AND
DRAIN THE SOLAR COLLECTOR LOOP PIPING.
BE EXTREMELY CARFUL WHEN DRAINING THIS FLUID. IT MAY BE
DISCHARGED AT A VERY HIGH TEMPERATURE AND PRESSURE.
VALVES NOS. 11
–
SYSTEM PURGE VALVE
VALVE 11 IS NORMALLY CLOSED. WHEN OPEN IT IS USED TO CHARGE AND
DRAIN THE SOLAR COLLECTOR LOOP PIPING.
BE EXTREMELY CARFUL WHEN DRAINING THIS FLUID. IT MAY BE
DISCHARGED AT A VERY HIGH TEMPERATURE AND PRESSURE.
ADDITIONAL TWO TANK SYSTEM VALVES
VALVE NO. 24
–
COLD FEED TO SOLAR TANK ISOLATION VALVE
THIS VALVE IS NORMALLY OPEN. WHEN CLOSED IN CONJUNCTION WITH
VALVE NO. 25 IT WILL ISOLATE THE SOLAR STORAGE TANK FROM THE
POTABLE WATER SYSTEM.
VALVE NO. 25
–
HOT OUTLET FROM SOLAR TANK ISOLATION VALVE
THIS VALVE IS NORMALLY OPEN. WHEN CLOSED IN CONJUNCTION WITH
VALVE NO. 24 IT WILL ISOLATE THE SOLAR STORAGE TANK FROM THE
POTABLE WATER SYSTEM.
VALVE NO. 26
–
SOLAR TANK BYPASS VALVE
THIS VALVE IS NORMALLY CLOSED. WHEN OPENED IN CONJUNCTION
WITH CLOSING VALVES NO. 24 & 25 IT WILL ALLOW COLD WATER TO
BYPASS THE SOLAR SYSTEM AND FEED DIRECTLY INTO THE AUXILLIARY
WATER HEATER.
